// For primitive components, `join-item` must be added manually.
Join([
input(
type: InputType.radio,
name: 'pagination_options',
classes: 'join-item btn btn-square',
attributes: {'aria-label': '1', 'checked': ''},
),
input(
type: InputType.radio,
name: 'pagination_options',
classes: 'join-item btn btn-square',
attributes: {'aria-label': '2'},
),
// ... more radio inputs
])